and NaOMe in methanol heated to reflux for ten minutes results in the conversion of the carboxamides to their corresponding primary amino methyl carbamates in nearly quantitative yields. The mild oxidative conditions of this modified Hofmann rearrangement are shown to be particularly useful for the preparation of p-substituted anilines.
用
NBS和NaOMe在加热至回流的
甲醇中处理10分钟,对一系列对位取代的芳族和伯族脂肪族
氨基甲酰胺进行处理,从而使羧酰胺以接近定量的产率转化为其相应的伯
氨基
甲基氨基甲酸酯。该修饰的霍夫曼重排的温和的氧化条件显示对于制备对位取代的
苯胺特别有用。